Novel imidazo[1,2-c]pyrimidines of the formula ##STR1## wherein R is an aryl of 6 to 12 carbon atoms, R.sub.1 is selected from the group consisting of hydrogen and alkyl, alkoxy and alkylthio of 1 to 5 carbon atoms when R.sub.2 and R.sub.3 together form a carbon-nitrogen bond or R.sub.1 and R.sub.2 together are .dbd.0 when R.sub.3 is selected from the group consisting of hydrogen, alkyl of 1 to 5 carbon atoms and alkenyl of 2 to 5 carbon atoms, R.sub.4 is selected from the group consisting of alkoxy and alkylthio of 1 to 5 carbon atoms, R.sub.5 is selected from the group consisting of hydrogen and alkyl of 1 to 5 carbon atoms and their non-toxic, pharmaceutically acceptable acid addition salts having anxiolytic properties.
咪唑并[1,2-c]
嘧啶类化合物的
化学式为 ##STR1## 其中 R 是含有 6 到 12 个碳原子的芳基,R.sub.1 从氢、烷基、烷氧基和烷
硫基中选择,这些基团含有 1 到 5 个碳原子,当 R.sub.2 和 R.sub.3 共同形成一个碳-氮键时,或者当 R.sub.1 和 R.sub.2 共同为 .dbd.0 时,R.sub.3 从氢、含有 1 到 5 个碳原子的烷基和含有 2 到 5 个碳原子的烯基中选择,R.sub.4 从含有 1 到 5 个碳原子的烷氧基和烷
硫基中选择,R.sub.5 从氢和含有 1 到 5 个碳原子的烷基中选择,以及它们的无毒、药用酸盐,具有抗焦虑作用。